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    • 5. 发明申请
    • Extraction Prcoess with Novel Solvent Regeneration Methods
    • 提取新型溶剂再生方法
    • US20130228448A1
    • 2013-09-05
    • US13783358
    • 2013-03-03
    • AMT INTERNATIONAL, INC.CPC CORPORATION, TAIWAN
    • Fu-Ming LeeTzong-Bin LinKuang-Yeu WuJyh-Haur HwangTsung-Min ChiuJeng-Cheng LeeHan-Tjen JanYuan-Fu Sun
    • B01D3/40
    • B01D3/40C07C7/08C07C7/10C10G7/08C10G21/12C10G21/20C10G21/28C07C15/02
    • Solvent regeneration to recover a polar hydrocarbon (HC) selective solvent substantially free of hydrocarbons (HCs) and other impurities from a solvent-rich stream containing selective solvent, heavy HCs, and polymeric materials (PMs) generated from reactions among thermally decomposed or oxidized solvent, heavy HCs, and additives is provided. A combination of displacement agent and associated co-displacement agent squeezes out the heavy HCs and PMs from the extractive solvent within a solvent clean-up zone. Simultaneously, a filter equipped with a magnetic field is positioned in a lean solvent circulation line to remove paramagnetic contaminants. The presence of the co-displacement agent significantly enhances the capability of the displacement agent in removing the heavy HCs and PMs from the extractive solvent. As a result, the solvent regeneration system operates under milder conditions and minimizes or eliminates the need for including a high temperature, energy intensive and difficult-to-operate thermal solvent regenerator.
    • 溶剂再生以从热分解或氧化溶剂中的反应产生的含有选择性溶剂,重HC和聚合材料(PM)的富溶剂流中回收基本上不含烃(HC)和其他杂质的极性烃(HC)选择性溶剂 ,重HC和添加剂。 置换剂和相关的同位移剂的组合在溶剂清洁区内从萃取溶剂中挤出重的HC和PM。 同时,配备有磁场的过滤器位于稀溶剂循环管线中以除去顺磁性污染物。 共位移剂的存在显着增强了置换剂从萃取溶剂中除去重HC和PM的能力。 因此,溶剂再生系统在更温和的条件下运行,并且最小化或消除了包括高温,能源密集型和难于操作的热溶剂再生器的需要。